What do file formats determine about graphics?
There are about 30+ formats, but lets focus on jpeg, bmp, &
png. I'll go from worst to best.
jpeg is not good for graphics at all. Ever the highest quality
jpeg brings noise and sometimes blur to your graphic. (highly not
recommended for graphics.)
bmp or bitmap is good for graphics, no blur or noise. It's clear
down to the pixel. The problem with bmp is that the coding is very
long. 2 - 70+ times larger of a file compared to a jpeg. (Not
really recommending this for graphics.)
png or Portable Network Graphics is the ideal file format for
graphics. png is as high of quality as bmp, but it can even have
transparency in it. Transparency is needed for mostly all graphics.
Also png is half to a third less coding than jpeg format. (Highly
recommended for graphics.)